Suspension of vehicles



y 28, 1931- E. LENHARDTSON I 1,815,924

SUSPENSION 0F VEHICLES Filed Oct. 14. 1927 Emma LENHARDTSON INVENTOR ATTORNEY.

atented July 193i EMILIO LE HAnnTsom or nUENos AIRES, ARGENTINA I l SUSPENSION or VEHICLES l Application filed 'flctober 14, 1927; seriaind 226,075.,

2 This invention relates to improvements in g pneumatic shock absorbers used between the body and wheel axles of amotor vehiclew The object'of the present invention is to produce certain'improvementsin the suspen-- s on elements of vehlcles, specially motorcars, motor trucks or lorries and the like, to fj permit the use of solid tires on the wheels,

Without making any apparent difference in theridingqualities over the ordinary pneu-- matic tires now in use, and at the same time deriving all of the benefits inherent to hard tires. 7 p i I -Briefiy the invention consists of pneumatic shock absorbers interposed between thesprings, chassis orframe, and thewheels of the vehicle, or atany other suitable point, 1n

(such a manner that the same elasticity is,

-- obtainable with; solid tires as with common pneumatic tires, the pneumatic shock abs sorbers absorbingthe vibration caused by roughand uneven roads,and assuring (30111-1, I

; tort to the passenger.

vehicle. v -I accomplish thehobjects of my invention by means of theapparatus illustratively ex-- accompanying drawings, in p h I 1 ing of -the axle (6) 1 ofthe vehicle; N Fig. I is a longitudinal :section, of the,

,axle and the common spring of a vehicle. Fig. II is a transverse sectional view of ity and tus.

My improved shock-absorbers consist of an; inner chamber inflated'with air or pressure fluids and enclosed in an outer chamber made of material similar to that used in the manufacture of pneumatic tires; The whole is encased in cups, containers, or movable caps," which are interposed betweenctheqoommon' springsand axles of the wheels, or between,

the, chassis and the springs, or between'two frames disposed and constructed according to theresistancean'd work'required of the emplified in the which shock-absorber device, disposed between the same. I i

Fig. III is ,a transverse section of a modification of the device, in which two chambers l are symmetrically arranged with relation to the spring, obtaining thereby grleater stabildiminishing the height'of the apparar L, wwith'grease.

Fig. IV illustrates the shock absorber device positioned between frame and body members.

' Fig. V illustrates the shock absorber usecl in a cantilever spring suspension. 7

Referring to the drawings-(l.) isthe pneumatic chamber made of material similar to that used in common pneumatic tires. In

the drawings it has the shape or formoit'am ellipsold, wlth transverse clrcular section.

The diameter of this circle and the length of the shock-absorber, are determined according to the weightand othercharacteristics of the vehicle. This chamber is inflated by means of valve (2) with pressure similarto that'given to common pneumatic tires.-

The form of the pneumatic chamber ('1),

as well as thedimensions and air pressure, can be likewise'modified accordlng to the vehicle whlch it is to be characteristics ofthe usedfor; Y

The valve (2) is the'same as thoseactually used in the air chambers of motorcars.

This pneumaticchamber (1) is contained between an upper cup (3), and a lower one (4), the internal surfaces of which-nearly coincide with chamber (1). WVhen in a larger, in order to give play to the chamber 1) when alterations are produced in the e'x ternal pressure on the cups. 4 I in FigrI, supports. a;

The upper cup (3) spring (5) of the vehicle.

state of equilibrium'cups (3) and (4) shall J The lower cup (4) rests on a journal bear- 7 Incrtheadrawings the upper cup has been indicated with a female socket toserve as a guide allowing vertical movements, but

avoiding horizontal displacements.

On the lower cup are spring members 7 dime, and to make the sliding movements between, the cups, more springy. I I These springs (7) should be' lubricated To augment the rigidness of the apparatus horizontally, and to avoid the cups being dislodged from their places by bumping movements, a bolt (8) has been provided at each end, with a nut and pressure spring, that tends to keep upper cup in its place, limits the total lifting of the same, but freely permits the downward movement of cup it belt and buckle can also be added to encircle the whole but has been omitted in the I drawing to avoid confusion. s V a On the surface of the outer cover of the pneumatic chamber (1) twoprotuberances (9), of same material as the cover, are placed,

- that will fit respectively infcavities in the cups (3) and (4); s

These protuberances will avoid the displacement of these chambers withinthe cups and will contribute to the horizontal rigidness of the whole.

7 In the form shown in Figures I and Ill stay 7 rods (10) have been placed, that join the it necessary to give further details.

As can be seen in Fig. III, a shock-absorbingsystem has been formed by two chambers symmetrically placed with relation to the spring. This will give great stability to the connectionand diminish the height of the apparatus. v

In Fig. IV is indicated another possible disposition between two frames (11) and- (12). V s

Fig. V shows the shock-absorbing de-- I vice placed between the spring (13) and the chassis (14) g V With this simple description, the possibility of adapting this device to an infinite num- 'ber of analogous cases, can beobserved.

The shape, materal, and most convenient manner in which it is to be used, what I claim as my exclusive invention and property, is:

In a shock absorber for vehicles, the combination with a substantially elliptical upper cup member having an internally indented block at its upper intermediate part, of a lower similar cup member having an internally indented block at itsglower intermediate part, an inflatable chamber enclosed by said cups and having diametrically opposite projections extending into the indentations in said cup members, said cup members having laterally arranged interengaging sliding surfaces to allowvfor relative movement of said cup members, spring means for yieldingly limiting the extent of relative movement of the, cups, a vehicle spring secured to the upper block and a' partof the chassis secured to the lower block. a p

EMILIO LENHARDTSON.

dimensions of the partsand accessories of V the apparatus should be decided on in each My new device. absorbs the vibration and I shock caused by rough'roads. supplanting' 7 and, moreover, itscost is infinitely less.

Having now particularly described and specified the nature of "my'invention andthe case, according to the characteristics of each vehlcle; 

